﻿<%@ Page Language="C#" AutoEventWireup="true" CodeFile="1-5.aspx.cs" Inherits="_1_5" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
</head>
<body>
    <form id="form1" runat="server">

        <asp:DropDownList ID="DropDownList1" runat="server" OnSelectedIndexChanged="DropDownList1_SelectedIndexChanged" OnTextChanged="DropDownList1_TextChanged" AutoPostBack="True">
            <asp:ListItem Value="https://tse4-mm.cn.bing.net/th/id/OIP-C.zwp5j5xYlXtYr_QV5gmDgAHaE9?pid=ImgDet&amp;rs=1">cat</asp:ListItem>
            <asp:ListItem Value="https://tse4-mm.cn.bing.net/th/id/OIP-C.DYsxs9DmK6iiB0i0rm2OQgHaHa?pid=ImgDet&amp;rs=1">dog</asp:ListItem>
            <asp:ListItem Value="https://pic.52112.com/2019/06/12/JPG-190612_216/LUHudoGvIJ_small.jpg">mouse</asp:ListItem>
        </asp:DropDownList>
        <img ID="img" runat="server" src="https://tse4-mm.cn.bing.net/th/id/OIP-C.zwp5j5xYlXtYr_QV5gmDgAHaE9?pid=ImgDet&amp;rs=1"/>
    </form>
</body>
</html>
